Half to filiase dyon



(No Model.)

T. GIGUERE.

ADDING MACHINE.

No. 594,734 Patented Nov 30, 1897.

WITNEEEIE. INK/ENTER.

Uivirnn S'rnrns I @rrrcn.

THOMAS GIGUERE, OE ATTLEBOROUGH, MASSACHUSETTS, ASSIGNOR OF ONE- HALF TOFILIASE DYON, OF NORTH ATLEBOROUGH, MASSACHUSETTS.

AD l3 l'hl G e AG Hi filPEGIFIGATION forming part of Letters Patent llo. 594,734, dated November 30, 1897.

Application filed July 9, 1897. Serial No. 648,987. (No model.)

To aZZ whom it may concern: nations, thus forming one hundred notches Beit known that I, THOMAS GIGUERE, of on each edge of the annular ring,the one- Attleborough, in the county of Bristol and hundredth notchcorresponding to the Zero on State of Massachusetts, have invented a newthe graduations. A pointer C is secured to 5 and useful Improvement inAdding Mathe annular ring C.

chines; and I hereby declare that the follow- In the drawings the diskis shown provided ing is a full, clear, and exact description of with aring F and a pair of scrolls, so that the the same, reference being hadto the accomdisk may be suspended; but the device may panying drawings,forming part of this specibe made without such means for suspending 1ofication. it. The disk may rave any desired outline This invention hasreference to animprove or external marginal form. It may be inment indevices for adding up numbers and serted into any article or form partof the subtracting numbers; and it consists in a cirsame. cular diskhaving two annular graduated To enable others skilled in the art to useI5 rings and a sliding annular ring, placed be my invention, 1 willillustrate its use by an tween the two graduated rings, providedexample, to wit: A customer buys a number around its edges with notchesand with a of articles, the first of which is marked pointer.twenty-eight cents. The seller or the cus- The object of the inventionis to facilitate toiner places a pin, pencil, or the point of any 20 theaddition of numbers and the subtraction other convenient article intothe notch corre- 7c of numbers, so as to find readily the desiredsponding wi h 2S 011 the graduated Circle total. E and moves this notchto the stop E. This Figure 1 is a front iew of the adding-mamoves theannular ring 6 and the pointer C chine. Fig. 2 is a sectional View ofone art, will point to 28 on the graduated circle.

25 and Fig. 3 a sectional view of the otherpart The neXt'article is,say, sixty-five cents. The the two views, Figs. 2 and 3, together beinga pointed pin, pen, or pencil is now placed in sectional view throughthe center of the dethe notch Corresponding with 65 on the Vice.graduated circle E. This notch is moved to In the drawings, Aindicatesacircular disk; ev right 13 e p a e p inter Will 0 B, anannular groove; 0, an annular ring slid mark 9-3 on the graduated circleD. The ing in the annular groove B. In the outer next article isnineteen cents. The notch corwall, at the bottom of the annular groove,is responding to 19 on the circle E is moved formed the groove b, and inthe back of the to the right until it reaches the stop E. In annularring 0 are secured the springs G (3, doing this the pointer C will passover the 3 5 which enter the groove Z) and hold the ring 0 stop D and onto 12 on the graduated cir- 8 5 in the groove while they secure the ring0 in ole D. The user will remember that more any position in which it isplaced. than one dollars worth has been added and The disk A is providedwith the outer gradthat the pointer now indicates $51.12. The uatedannular surface D, the numerals of next article is, say, eighty-fivecents. The

40 which, starting from zero at the stop D, eX- point is inserted intothe notch corresponding tend to the right until the Zero at the stop Dto 85 on the circle E and the notch moved indicates 100, and a similargraduated surto the stop E and the pointer will indicate face E, thezero of which is on the left of the 97 on the graduated circle D, whichshows fixed stop E and the numerals of which exthat the purchases amountto one dollar and 5 tend from the zero toward the left until 100ninety-seven cents, ($1. 97.) If now the pur- 5 is indicated by thezero. Between these two chaser wishes to do without the first article,graduated circles is placed the annular ring costing twenty-eight cents,the point of the 0, provided on each edge adjacent to the gradpin orpencil is placed into the notch correuated circular snrfacesD and E withnotches sponding with 28 on the graduated circle 50 c 0, correspondingwith the units of the grad- D, and this notch is moved to the leftagainst 100 the stop I). The pointer C will now point to 69 on thecircle 1), and, remembering that it has passed the stop D once, the costof the goods will be one dollar and sixty-nine cents. All that the userhas to remember is the number of times the pointer has passed over thestop D in turning to the right to know how many dollars have beencounted, the cents being indicated by the pointer C For the ordinarytransactions in shopping the device is convenient and simple in use.

. Having thus described my invention, I claim as new and desire tosecure by Letters Patent In an adding-machine, the combination THOMASGIGUERE.

lVitnesses:

Josnrn A. MILLER, J12, M. F. BLIGH.

